var BrowserDetect = {
	init: function () {
		this.browser = this.searchString(this.dataBrowser) || "An unknown browser";
		this.version = this.searchVersion(navigator.userAgent)
			|| this.searchVersion(navigator.appVersion)
			|| "an unknown version";
		this.OS = this.searchString(this.dataOS) || "an unknown OS";
	},
	searchString: function (data) {
		for (var i=0;i<data.length;i++)	{
			var dataString = data[i].string;
			var dataProp = data[i].prop;
			this.versionSearchString = data[i].versionSearch || data[i].identity;
			if (dataString) {
				if (dataString.indexOf(data[i].subString) != -1)
					return data[i].identity;
			}
			else if (dataProp)
				return data[i].identity;
		}
	},
	searchVersion: function (dataString) {
		var index = dataString.indexOf(this.versionSearchString);
		if (index == -1) return;
		return parseFloat(dataString.substring(index+this.versionSearchString.length+1));
	},
	dataBrowser: [
		{ 	string: navigator.userAgent,
			subString: "OmniWeb",
			versionSearch: "OmniWeb/",
			identity: "OmniWeb"
		},
		{
			string: navigator.vendor,
			subString: "Apple",
			identity: "Safari"
		},
		{
			prop: window.opera,
			identity: "Opera"
		},
		{
			string: navigator.vendor,
			subString: "iCab",
			identity: "iCab"
		},
		{
			string: navigator.vendor,
			subString: "KDE",
			identity: "Konqueror"
		},
		{
			string: navigator.userAgent,
			subString: "Firefox",
			identity: "Firefox"
		},
		{
			string: navigator.vendor,
			subString: "Camino",
			identity: "Camino"
		},
		{		// for newer Netscapes (6+)
			string: navigator.userAgent,
			subString: "Netscape",
			identity: "Netscape"
		},
		{
			string: navigator.userAgent,
			subString: "MSIE",
			identity: "Explorer",
			versionSearch: "MSIE"
		},
		{
			string: navigator.userAgent,
			subString: "Gecko",
			identity: "Mozilla",
			versionSearch: "rv"
		},
		{ 		// for older Netscapes (4-)
			string: navigator.userAgent,
			subString: "Mozilla",
			identity: "Netscape",
			versionSearch: "Mozilla"
		}
	],
	dataOS : [
		{
			string: navigator.platform,
			subString: "Win",
			identity: "Windows"
		},
		{
			string: navigator.platform,
			subString: "Mac",
			identity: "Mac"
		},
		{
			string: navigator.platform,
			subString: "Linux",
			identity: "Linux"
		}
	]

};
BrowserDetect.init();

function get_action_form()
{
	return document.getElementById( "frmAction" );
}

//------------------------------------------------------------------------------------------------------------
//--- validate date
//------------------------------------------------------------------------------------------------------------
function check_date( day, month, year )
{
	
	var	the_day	= day.toString();
	var	the_month =	month.toString();
	var	the_year = year.toString();
	
	var	day_month_pattern =	/^(\d{1,2})$/; 
	var	year_pattern = /^(\d{4})$/;	

	var	regex =	new	RegExp(day_month_pattern)
	var	matchArray = the_day.match(regex);

	if( ( matchArray ==	null ) || ( day < 1 ) || ( day > 31 ) )
	{
		alert( day + " day is not in a valid format." );
		return false;
	}
	
	var	regex =	new	RegExp( day_month_pattern )
	var	matchArray = the_month.match( regex );
	
	if( ( matchArray ==	null ) || ( month < 1) || ( month > 12 ) )
	{
		alert( month + " month is not in a valid format." );
		return false;
	}
	
	var	regex =	new	RegExp( year_pattern );
	var	matchArray = the_year.match( regex );

	if( matchArray == null )
	{
		alert( year + " year is not in a valid format." );
		return false;
	}

	//--- is date valid for month ?
	if( month == 2 )
	{
		if( ( ( year%4	== 0 ) && (	year%100 !=	0 )	) || ( year%400	== 0 ) )
		{ 
			//--- leap year
			if( day > 29 )
			{
				alert( "Incorrect date!" );
				return false;
			}
		}
		else
		{
			if( day > 28 )
			{
				alert( "Incorrect date!" );
				return false;
			}
		}
	}
	
	if( ( month == 4 ) || ( month == 6 ) || ( month == 9 ) || ( month == 11 ) )
	{
		if( day > 30 )
		{
			alert( "Incorrect date!" );
			return false;
		}
	}
}

/**
* Insert a tab at the current text position in a textarea
* Jan Dittmer, jdittmer@ppp0.net, 2005-05-28
* Inspired by http://www.forum4designers.com/archive22-2004-9-127735.html
* Tested on: 
*   Mozilla Firefox 1.0.3 (Linux)
*   Mozilla 1.7.8 (Linux)
*   Epiphany 1.4.8 (Linux)
*   Internet Explorer 6.0 (Linux)
* Does not work in: 
*   Konqueror (no tab inserted, but focus stays)
*/
function insertTab(event,obj) {
    var tabKeyCode = 9;
    if (event.which) // mozilla
        var keycode = event.which;
    else // ie
        var keycode = event.keyCode;
    if (keycode == tabKeyCode) {
        if (event.type == "keydown") {
            if (obj.setSelectionRange) {
                // mozilla
                var s = obj.selectionStart;
                var e = obj.selectionEnd;
                obj.value = obj.value.substring(0, s) + 
                    "\t" + obj.value.substr(e);
                obj.setSelectionRange(s + 1, s + 1);
                obj.focus();
            } else if (obj.createTextRange) {
                // ie
                document.selection.createRange().text="\t"
                obj.onblur = function() { this.focus(); this.onblur = null; };
            } else {
                // unsupported browsers
            }
        }
        if (event.returnValue) // ie ?
            event.returnValue = false;
        if (event.preventDefault) // dom
            event.preventDefault();
        return false; // should work in all browsers
    }
    return true;
}

function fix_images_width( classname, max_width )
{
	var the_images = document.getElementsByTagName( "img" );
	var i = 0;

	for( i = 0; i < the_images.length; i++ )
	{
		var img = the_images[i];

		if( img.width > max_width && img.className == classname )
		{
			var new_height = img.height * ( max_width / img.width );
			img.width = max_width;
			img.title = "Click pentru rezolutia reala";
			img.alt = "Click pentru rezolutia reala";

			if( img.addEventListener ) 
			{
				img.style.cursor = "hand";
				img.addEventListener( 'click', viewFull, false );
			}
			else
			if( img.attachEvent ) 
			{
				img.style.cursor = "pointer";
				img.attachEvent( 'onclick', viewFull );
			}
		}
	}
}